Abstract
We have developed a method to predict site amplifications using only three parameters: peak accelerations and peak velocity on surface of bedrock, and natural period of subsurface ground. The proposed method can provide two major advantages as compared with conventional methods. First, the site amplification can be estimated more accurately than ones obtained through conventional methods, considering not only natural period of subsurface ground but also predominant period of input motions into engineering basement. Second, we can apply the method to various levels of input motions. We, furthermore, confirmed well-functioning formulation for the proposed method through discussion of analyses of seismic records.
